Pipe-threading tool.



B. 30313311.. PIPE THREADING TOOL. I APPLIOAEION FILED APLIZ, 1907.924,963. Patented June 15,1909.

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B. BURDEN.

PIPE THREADING TOOL.

APPLICATION FILED APR.12, 1907. 924,963, Patented June 15,1909.

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" UNITED STATES PATENT oF oE.

BRADFORD BORDEN, OF WARREN, OHIO, ASSIGNOR TO THE BORDEN COMPANY, OFWARREN, OHIO, A CORPORATION OF OHIO.

PIPE-THEE ADING- TOOL.

Specification of Letters Patent.

Patented June 15, 1909.

Application filed April 12, 1907. Serial No. 367,738.

T 0 all whom "it may concern:

Be it known that I, BRADFORD BORDEN, of IVarren, in the county ofTrumbull and State of Ohio, have invented certain new and usefulImprovements in Pipe-Threading Tools; and I do hereby declare thefollowing to be a full, clear, and exact descri tion of the invention,such as will enable ot iers skilled in the art to which it appertains tomake and use the same.

The object of this invention is to provide a threading tool capable offorming threads of different pitches on pipes, bolts and the like, ofvarious sizes.

The invention comprehends, in a single die stock, a plurality of sets ofchasers, the chasers of one set being held out of the way while thechasers of the other set are in operation.

The invention will be hereinafter fully set forth and particularlypointed out in the claims.

In the accompanying drawings, Figure 1 is a plan View. Fig. 2 is asimilar View, with one of the chaser-adjusting plates removed. Fig. 3 isa bottom face view of such plate. Fig. 4 is a section on line 4-4, Fig.2. Figs. 5 and 6 are detail views.

Referring to the drawings, 1 designates the housing which I have shownas formed with the usual sockets 2 for the manipulating handles, andwith radial guideways for the chasers. I have shown six chasers, threeto a set, but preferably I employ sets of four. All the chasers of thetwo sets are on a common plane. Each chaser carries a lug projectingbeyond the face of the housing, the lugs 4 of the chasers of the set 5being of greater length than the lugs 4 of the chasers of the set 6.

7 designates a circular plate extending over the face of the housing andhaving a central opening to accommodate the central tubular portion 8 ofthe housing. The radial guideways also extend through the tubularportion. This plate 7 is formed with a series of eccentric slots 9 whichtake in the lugs 4 of the chasers of the set 6, so that by turning suchplate axially the chasers will be moved radially, the extent of theiradjustment being regulated according to the size of the pipe or bolt tobe threaded. This plate also has a second set or series of slots 10which are concentric to its axis. These latter slots take in the lugs 4of the chasers of the set 5, and have each at one end a branch orrentrant slot 12. \Vhen the chasers of the set 5 are moved radially sothat their respective lugs are within the end slots 12, the adjustinglate 7 and the chasers of the set 6 are 100 red; while when the late 7is turned axially to move the chasers o the set 6 radially the chasersof the set 5 are locked by the concentric walls of the slots 10. 13designates a second circular plate, likewise having a central opening toaccommodate the tubular ortion 8, and formed on its under face witi aseries of eccentric slots or grooves 13 for taking in the elongated lugs4 of the chasers of the set 5. By turning this second late 13 axiallythe chasers of the set 5 will be moved radially and at the same time thechasers of the set 6 are held locked by the locking of their adjustingplate 7. When it is desired to employ the chasers of the set 6 thechasers of the set 5 are thrown outwardly so as to position their lugsat the points of conjunction of slots 12 and the concentric slots 10, bythe turning of plate 13, thereby permitting plate 7 to be turned toeffect the shifting of the chasers of the set 6, and at the same timelock the chasers of the set 5.

14 designates a nut screwed onto the threaded end of the tubular portion8, such nut serving to hold all of the parts to their seats, and at thesame time allow of the free manipulation of either of the plates 7. Thisnut is preferably locked by a screw 15. A look nut 16 screws on theexterior of nut 14, and is designed to bind the two adjusting plates andchasers in any position into which they may be set.-

In practice, the chasers of one set are cut for forming a thread of lesspitch than that formed by the chasers of the other set.

I claim as my invention:

1. A threading tool, comprising a housing, two sets of chasers, all on acommon plane, adjustably mounted in said housing, means for adjustingeach set of chasers, and means for automatically locking either set ofchasers by the movement of the adjusting means of the other set ofchasers.

2. A threading tool, comprising a housing, two sets of chasersadjustably mounted in said housing, separate adjusting plates forinterlocking with and actuating said chasers, and means forautomatically locking either set of chasers and its adjusting plate bythe movement of the adjusting plate of the other set of chasers.

3. A threading tool, comprising a housing, two sets of chasersadjustably mounted in said housing, adjusting plates for the chasers,and means carried by one of the adjusting plates for locking the chasersof the other adjusting plate when the first mentioned adj Listing plateand its chasers are free to be moved.

4. A threading tool, comprising a housing, two sets of chasersadjustably mounted in said housing, adjusting plates for the chasers,and means carried by one of the adjusting plates whereby it will belocked by the chasers of the other adjusting plate when the latter andits chasers are free to be moved.

5. A threading tool, comprising a housing, two sets of chasersadjust-ably mounted in said housing, and adjusting plates for thechasers, one of said plates having means for locking one set of chaserswhen it and its chasers are in use, and also having means whereby it andits chasers will be locked by the chasers of the other adjusting platewhen such latter chasers and plate are in use.

6. A threading tool, comprising a housing, two sets of ehasers radiallymounted in said housing, each chaser carrying a lug, an adjusting platehaving two sets of slots, one set eccentric and the other concentric,the lugs of one set of chasers rejecting into said eccentric slots andthe lugs of the other set of chasers into the concentric slots, saidconcentric slots opening each at one end into reentrant slots, and asecond. adjusting plate having eccentric slots for taking in thechaser-lugs extended through the concentric slots of the first-mentionedplate.

7 A threading tool comprising a housing having a central tubular portionintegral therewith and radial guideways formed in the housing and saidtubular portion, two sets of chasers, all on a common plane, adjustablymounted in said guideways,xeach chaser having a lug, two plates on oneside of said housing having each a series of eccentric slots for takingin the lugs of the chasers, and means on. said tubular portion forretaining said plates.

In testimony whereof, I have signed this specification in the presenceof two subscribmg witnesses

